Error debian Acer nitro 5

package: installation reports Boot method: <How to organize the installer? CD/DVD? usb pen? Network?> Image version: <better is the full URL of the image you got> Data: <Date and time of installation> Machine: <Machine Description (acer an515-52-7974 Processor: i7 Intel acer nitro 5 an515-52-7974 | i7-8750h Memory: 16 Partitions: <df -Tl serves; raw partition table is preferred > External use hdc 1 2 with dual boot windows I tested it without it as main Output from lspci -knn (or lspci -nn): Basic system installation checklist: [O] = OK, [E] = Error (describe below), [ ] = did not try Initial boot: [ ]ok Detect network card: [ ]ok Configure network: [ ],,ok free kernel mode Detect installation medium: [ ] gave installation error Load installer modules: [ ] loads davfail Detect hard drives: [ ] ok Partition hard drives: [ ] ok Install base system: [ ] ok Clock/time zone setting: [ ]ok Set username/password: [ ]ok Installation tasks: [ ] ok Install the bootloader: [ ] ok Installation total: [ ] not installed Accepts Ubuntu 19.04 kernel firmware well